URGENT – IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 463
NWS STORM PREDICTION CENTER NORMAN OK
355 PM CDT SUN AUG 17 2014

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
WESTERN AND CENTRAL NORTH DAKOTA
NORTH CENTRAL SOUTH DAKOTA

* EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 355 PM UNTIL
1000 PM CDT.

* PRIMARY THREATS INCLUDE…
SCATTERED LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE
ISOLATED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 70
STATUTE MILES EAST AND WEST OF A LINE FROM 35 MILES WEST OF
MOBRIDGE SOUTH DAKOTA TO 60 MILES NORTH NORTHWEST OF DEVILS LAKE
NORTH DAKOTA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU3).

PRECAUTIONARY/PREPAREDNESS ACTIONS…

REMEMBER…A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY
DO PRODUCE TORNADOES.

&&

OTHER WATCH INFORMATION…CONTINUE…WW 462…

DISCUSSION…WIDELY SCATTERED STORMS ARE BEGINNING TO INCREASE OVER
SWRN AND NORTH CENTRAL ND IN ADVANCE OF A SHORT WAVE TROUGH MOVING
EWD FROM MT. THE ENVIRONMENT IS MODERATELY UNSTABLE WITH CAPE TO
2000 J/KG…AND SUFFICIENT VERTICAL SHEAR IS PRESENT TO SUPPORT
ORGANIZED MULTICELL AND ISOLATED SUPERCELL STORM STRUCTURES.
ACTIVITY SHOULD SPREAD EWD INTO THE EVENING WITH A THREAT FOR LARGE
HAIL AND STRONG WIND GUSTS.